2043003440 has 20 divisors (see below), whose sum is σ = 4749983184. Its totient is φ = 817201344.

The previous prime is 2043003421. The next prime is 2043003449. The reversal of 2043003440 is 443003402.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (2043003449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12768692 + ... + 12768851.

Almost surely, 2^2043003440 is an apocalyptic number.

2043003440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2043003440 is an abundant number, since it is smaller than the sum of its proper divisors (2706979744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2043003440 is a wasteful number, since it uses less digits than its factorization.

2043003440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25537556 (or 25537550 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 2043003440 is about 45199.5955734119. The cubic root of 2043003440 is about 1268.8872473527.

Adding to 2043003440 its reverse (443003402), we get a palindrome (2486006842).

The spelling of 2043003440 in words is "two billion, forty-three million, three thousand, four hundred forty".